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I understand we need a lot of them, but why did you mention time? million years? surely not! I assume a scheme of saving & releasing energy in a short time, fit for supercapacitors, then pumping compressed-air tanks, then lithium battery packs ... The nanowatt scales are not considerable to me...

Recently, I saw this: Wiliot - Battery-free Bluetooth Tags Battery-Free Bluetooth Tracking Tags From Wiliot Battery-free sensor tag gathers energy from radio frequencies World’s first battery-free Bluetooth chip pulls power from the air This tiny Bluetooth chip doesn’t need a battery because it...

VolkerP, Thank you for the reply. Well, the English version is the most complete version. Actually it describes a concept in terms of physics, not engineering details. I have also a Persian/Farsi version, but it's not complete yet. I devoted much time to the English version to more number of...

Hello everybody. I've worked on a plan of a hybrid car for about a year. My intention was to help the environment, in particular the weather of Iran where we suffer from its pollution. I started a review on the existing possibilities and I found out the electric vehicles are interesting options...